JPS5617504A - Narrow-band delay addition amplifying circuit using surface wave filter - Google Patents

Narrow-band delay addition amplifying circuit using surface wave filter

Info

Publication number
JPS5617504A
JPS5617504A JP9295779A JP9295779A JPS5617504A JP S5617504 A JPS5617504 A JP S5617504A JP 9295779 A JP9295779 A JP 9295779A JP 9295779 A JP9295779 A JP 9295779A JP S5617504 A JPS5617504 A JP S5617504A
Authority
JP
Japan
Prior art keywords
surface wave
wave filter
amplifying circuit
frequency
output terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9295779A
Other languages
Japanese (ja)
Other versions
JPS6217894B2 (en
Inventor
Botaro Hirosaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9295779A priority Critical patent/JPS5617504A/en
Publication of JPS5617504A publication Critical patent/JPS5617504A/en
Publication of JPS6217894B2 publication Critical patent/JPS6217894B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To compensate the loss at the desired pass band by connecting the 1st output terminal of the surface wave filter to the positive-phase input terminal of the differential amplifying circuit and at the same time connecting the 2nd output terminal to the adverse-phase input terminal of the differential amplifying circuit via the delay circuit respectively. CONSTITUTION:The input voltage is applied to surface wave filter 3 using the triple resonance. The voltage of the 1st output terminal of surface wave filter 3 is applied to positive-phase input terminal 7 of differential amplifier 9; and the voltage of the 2nd output terminal of filter 3 is applied to adverse-phase input terminal 8 of amplifier 9 with a delay of 1/f0 second (f0: triple resonance number) given through delay circuit 6 respectively. With such constitution, the frequency- gain characteristics is ¦cospif/f0¦ (f: frequency of input voltage), and thus the bulk resonance mode existing at the area near frequency f0/2 is reduced greatly. And the basic resonance mode of frequency f0/3 is reduced down to 6dB.
JP9295779A 1979-07-20 1979-07-20 Narrow-band delay addition amplifying circuit using surface wave filter Granted JPS5617504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9295779A JPS5617504A (en) 1979-07-20 1979-07-20 Narrow-band delay addition amplifying circuit using surface wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9295779A JPS5617504A (en) 1979-07-20 1979-07-20 Narrow-band delay addition amplifying circuit using surface wave filter

Publications (2)

Publication Number Publication Date
JPS5617504A true JPS5617504A (en) 1981-02-19
JPS6217894B2 JPS6217894B2 (en) 1987-04-20

Family

ID=14068927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9295779A Granted JPS5617504A (en) 1979-07-20 1979-07-20 Narrow-band delay addition amplifying circuit using surface wave filter

Country Status (1)

Country Link
JP (1) JPS5617504A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499249A (en) * 1972-05-16 1974-01-26
JPS53139953A (en) * 1977-05-12 1978-12-06 Murata Manufacturing Co Elastic surface wave filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499249A (en) * 1972-05-16 1974-01-26
JPS53139953A (en) * 1977-05-12 1978-12-06 Murata Manufacturing Co Elastic surface wave filter

Also Published As

Publication number Publication date
JPS6217894B2 (en) 1987-04-20

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